EP 3276302 B1 20210519 - METHOD AND SYSTEM FOR COMPENSATING FOR SOFT IRON MAGNETIC DISTURBANCES IN MULTIPLE HEADING REFERENCE SYSTEMS
Title (en)
METHOD AND SYSTEM FOR COMPENSATING FOR SOFT IRON MAGNETIC DISTURBANCES IN MULTIPLE HEADING REFERENCE SYSTEMS
Title (de)
VERFAHREN UND SYSTEM ZUR KOMPENSATION MAGNETISCHER WEICHEISENSTÖRUNGEN IN EINEM MEHRFACHRICHTUNGSBEZUGSSYSTEM
Title (fr)
PROCÉDÉ ET SYSTÈME PERMETTANT DE COMPENSER LES PERTURBATIONS MAGNÉTIQUES EN FER SOUPLE DANS DES SYSTÈMES DE RÉFÉRENCE D'ATTITUDE MULTIPLES
Publication
Application
Priority
- US 201615223953 A 20160729
- US 201715592068 A 20170510
Abstract (en)
[origin: EP3276302A1] A method and system for compensating for soft iron magnetic disturbances in multiple heading reference systems, such as aircraft heading reference systems, integrated standby units; or vehicle inertial systems, detects and provides a heading correction signal to the error prone heading reference system when a detected difference in value between a gyro heading relative to magnetic north and a magnetometer reading during a defined measurement period exceeds a predetermined acceptable threshold value of change, such as one based on the expected gyro drift over that period. Upon receipt of the heading correction signal, the gyro heading is adjusted to maintain an accurate heading relative to true magnetic north. If this threshold value is not exceeded, then the magnetometer reading is used for the heading value. This method is periodically repeated in order to continually maintain an accurate heading and may be employed for each heading measurement axis.
IPC 8 full level
G01C 1/00 (2006.01); G01C 17/38 (2006.01); G01C 21/16 (2006.01); G01C 25/00 (2006.01); G01R 33/00 (2006.01)
CPC (source: EP US)
G01C 1/00 (2013.01 - EP); G01C 17/38 (2013.01 - EP); G01C 25/005 (2013.01 - EP); G01R 33/0035 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3276302 A1 20180131; EP 3276302 B1 20210519; EP 3872449 A1 20210901; EP 3872449 B1 20240424; JP 2018049000 A 20180329; JP 6983565 B2 20211217
DOCDB simple family (application)
EP 17183362 A 20170726; EP 21167506 A 20170726; JP 2017143592 A 20170725